Bunch-builder mechanism



July 7, 1925.

O. L. OWEN v BUNCH BUILDER MECHANISM Filed July 16, 1924 2 Sheets-Sheet 1 0.1. OWEN BUNCH BUILDER MECHANISM July 7, 1925.

Filed July 16, 1924 2 Sheets-Sheet 2 {/VVENTOR. 0M @4294 Patented July 7, 1925.

UNITED STATES" PATENT OFFICE.

OSCAR In OWEN, OF WHITINSV ILLE; MASSACHUSETTS, ASSIGNOR TO WHITIN MA- CHINE WO'RKS, OF WHITINSVILLE; MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

BUNCH-BUILDER MECHANISM.

Application filed July 16, 1924. Serial No. 728,300.

To all whom it may concem:

, Be it known'that I, Oscar: L. OWEN, a citizen of the United States, residing at VVhitinsville, in the county of Worcester and Commonwealth of Massachusetts, have invented anew and useful Improvement in Bunch-Builder Mechanisms, of which the following is a specification.

This invention relates to yarn spinning and winding machines of that type designed to windyarn on a bobbin, first a preliminary winding or bunch and then a main winding, and the principal object of the invention is to provide amechanism for controlling the traverse of the ring rail for laying of the preliminary winding and automatic means of simple and inexpensive construction whereby the preliminary winding mechanism is renderedinoperative after the bunch has been wound. 7

Another object'of the invention is to provide adjustable means whereby the size and positionofthe bunch may be varied. Another object of the invention is to pro,- vide automatic means whereby the preliminary winding mechanism is set in operative position prior to the operative dofling the full bobbins from the machine. WVith theseobjects in view, the invention comprises certain novel constructions, combinations and arrangements of parts as will be hereinafter specified and claimed.

In the drawings: v

Figure 1 is a front elevation of a sufficient portion of a spinning machine embodying the invention to make clear its construction and manner of operation.

Figure 2.is an enlarged-sectionon the line 22 of Figure 1. I r

Figure 3 is a detached detail showing the locking latch in its inoperative position.

Figure 4 is an end elevation of Figure 3.

Figure 5 is an enlarged section of the main builder cam and the preliminary winding cam on diametrical line 66 of Figure 2.

Figure 6 is an enlarged view of the top of the segment arm showing its relation to the locking latch actuating, rod. I

Figure 7 is an end elevation of Figure 6.

The invention is herein illustrated as being applied to a ring spinning machine,

ing and rotating a series of yarn bobbins. A lifter rail l'has a series of rings 5 provided with the usualtravellers, and is supported by the lifter rod 6, the lower end 7 of which being supported upon a roll 8 rotatively mounted on a stud 9 fixed to the cross shaft lifter lever 10 fulcrumed at 11 in the hanger 12 fixed to the underside of the bolster rail 2. The upward traverse of the ring rail 1 isefi'ected'by the force of the weighted arm 13 imparted to the cross shaft lever 10. Extending upward from the fulcrum of the lever 10 is the segment arm 14. to which is connected one end of a chain 15 which is 1 lifter lever 10 and lifter rod 6 are shown'in builder motion cam 22 is fastened to. the

inner end of'the shaft 20. The rotation of the cam acting on the follow roll 23 revolvable on a stud fixed to the builder lever 18 causes the latter to swing up and down on its pivot 19 and through connections between the builder lever and the ring rail the traverse of the yarn being wound on the bobbin is effected.

The construction above described is com mon to spinning machines as now in use, wherein the yarn is wound on the bobbin in regular layers suitable for use in shuttles of plain looms. Where weft replenishing looms are used it is desirable that the bobbins be wound. with a preliminary or bunch winding and then with the main winding. The bunch winding extends for a predetermined distance upwardly from the lower part of the bobbin, the purpose of which is to provide an engaging element to act in conjunction with the loom feeler mechanism whereby the weft replenishing mechanism is brought into action prior to the complete exhaustion of the yarn on the bobbin in a running shuttle.

In order to fulfill one of the objects of my invention in Winding the yarn in the form of a bunch at the lower part of the bobbin, my invention provides means whereby the ring ail is held stationary for a short interval of time and then resumes its regular motion. During the retardation of the ring rail the yarn delivered is wound in form of a bunch. This effect is accomplished by means of a locking latch 24 abutting against the builder lever 18 thus preventing its inoven'ients. The latch is pivoted on a stud fired in bracl-zet 26 in stationary relation to the framing of the machine; the latch being provided with an abutment member 27 adjustal ly mounted on' the lower part of llCQ latch.

After the desired bunch is wound the latch is disconnected from its abutting engagement with the builder lever by means of a cam 28 fixed to the shaft and rotating in unison with the cam 22 that controls the main winding of the yarn. The cam 28 is preferably made in a disc form with one or more cam points 29 arranged on the inner side of the disc. The cam point in its rotation comes in contact with a .roll 30 revolvable on a stud 31 adjustably mounted on the latch 24 and thus forces the latch from its abutting relation with the builder lever.

' Inoperationthe operative before doffing the full bobbins and replacing with empty ones, depresses the ring rail by'ine'ansof foot pressure appliedto the ends of the lever 10, thus positioning the ring rail for the beginning of the bottom traversebf the yarn. This action depresses the builder lever 18 to its lowest position acted thereon by the cam 22 and atthe same time swings the latch 24 from its inoperative position to its operative position abutting against the top of the builder lever. This iseffected by suitable connections With the ring rail traversing motion, preferably I make use of a rod 32 connecting the upper of the latch 24 with the segment arm 14. The rod 32' is loosely held in a slot 33 formed in a lug 34 on the upper part of the arm 14;, by this construction cramping of the rod is prevented at various positions of the arm 14. due to its movements in actuating the ring rail. Pressure is exerted on the rod by thelug 34.- acting in conjunction with a collar 35 fixed to the rod 32. A compression spring 36 is placed on the rod between the collar and lug so as to allow an easy positioning of the latch in making its abutting engagement with the builder lever.

What I claim is:

1. In a machine of the character described, the combination of a series of spindles for supporting and rotating yarn bobbins, yarn guiding means, a builder lever, a rotary cam for actuating said lever, a locking latch pivoted to a stationary part of the machine, an abutting member adiustably mounted on the looking latch and adapted to abut against the builder lever to retard its movements, 7

a cross shaft for imparting reciprocating motion to the ring rail, an arm fixed to said shaft, a, lug on the arm, a. slot in the lug, a red one end of which is slidabl'e insaid slot and the othe-r'end connected to the looking latch, a collar on the rod adjustably fixed thereto, a compression spring on the rod between the said collar and said lug, a knock-off member attachedto the locking latch and a cam adapted to act in conjunction with said knock-off member whereby the locking latch is released from its abutting relation with the builder lever.

2. In a machine of the character described, the combination of a series of spindles for supporting and rotating yarn bobbins, yarn guiding means, a builder l eveigfla builder cam for actuating said lever, a locking lat-ch pivoted to a stationary part of the machine, an abutting member adjustably mounted on the locking latch adapted to abut against the builder lever toretard its movements, a knock-off cam rotating in unison with the builder cam and adapted to release the latch from its abutting relation-with the builder lever, a cross-shaft actuated by the builder lever for im artin reci rocatin' motion to the ring rail and connecting means between the cross-shaft and locking latch whereby the locking latch is forced into an abutting relation with the builder lever;

In testimony whereof, I have. signed this specification.

OSCAR L.. OElVEN. 

